> [13:45:31 ERROR]: Could not load 'plugins/MassiveCore.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R4/PlayerInventory
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugins(CraftServer.java:355) [executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at org.bukkit.craftbukkit.v1_7_R3.CraftServer.<init>(CraftServer.java:317) [executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.PlayerList.<init>(PlayerList.java:68) [executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.DedicatedPlayerList.<init>(SourceFile:14) [executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:126) [executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:436) [executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R4/PlayerInventory
at com.massivecraft.massivecore.MassiveCore.getMassiveCoreGsonBuilder(MassiveCore.java:85) ~[?:?]
at com.massivecraft.massivecore.MassiveCore.<clinit>(MassiveCore.java:70) ~[?:?]
at java.lang.Class.forName0(Native Method) ~[?:1.7.0_65]
at java.lang.Class.forName(Class.java:270) ~[?:1.7.0_65]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
... 9 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R4.PlayerInventory
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:67) ~[executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_65]
at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_65]
at com.massivecraft.massivecore.MassiveCore.getMassiveCoreGsonBuilder(MassiveCore.java:85) ~[?:?]
at com.massivecraft.massivecore.MassiveCore.<clinit>(MassiveCore.java:70) ~[?:?]
at java.lang.Class.forName0(Native Method) ~[?:1.7.0_65]
at java.lang.Class.forName(Class.java:270) ~[?:1.7.0_65]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[executable.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]